Coke oven



C. OTTO coxfi ovEN Filed April 12, 1928 e w K March 24, 1931.

Ptnd, Mu. 24, 1981 cABL or'ro, or Essen-311113, GERMANY COKE OVENApplication led April 12, 1928, Serial lfi'o.

This invention relates to an improved construction of coke ovens. Theconsiderable enlargement practiced in the last few years, of thecross-sectional dimensions of the horizontal chambers of chamber cokeovens serving to produce gas and coke, both as to the height and lengthof the .chambers, results in an increase of the chamber content up totwice that of the hitherto usual one employed.

10 Furthermore, dueto the notable improvements in heating the cokingchambers the duration of the carbonizing period could be reduced aboutone half. These two circumstances result in an extraordinary increase ofthe quantity of the gases of distillation produced during coking.

With the chamber ovens hitherto used, the floor and cover of thechambers extend in a straight horizontal plane. Furthermore,

theesurface of the charge is likewise kept horizontal, this beingobtained, when the coal is charged from the cover, by subsequentlylevelling the charge, and, when stamped coal is to be coked, byuniformly' stamping it in the stamping machine. In both these cases thefree space existing -between the surface of the charge and the chambercover, the so-called gas-collecting passage, has an oblong shape whichis of the sameheight throughout. Due to this shape of the gascollectingpassage, however, the distillationgases which collect near the gasoutlet opening of the chamber cover from all'portions of the chamber,are blocked at this opening.

This causes a decomposition of the gases and objectionable diiferencesof pressure within the coking chamber.

Now the invention has for its object to avoid this drawback withcertainty and consists substantially in that the cross-sectional area of.the gas collecting passage is increased toward the gas Outlet openingprovided in the chamber cover, either by suitably constructing the coveror Shaping the surface 5 of the charge, or by doing both. By thisarrangement the distillation gases are drawn of without being blocked inthe above-mentioned degree, so that any decomposition of the gases ordifferences of pressure within vthe chamber' are prevented and anincreased 288,485, ana m Germany March 28, 1927.

yield of gasesand by-products, particularly anmionia, is obtained.

The enlargement of the gas-collecting passage may be obtained, in casestamped coal is coked in horizontal chamber ovens, by so 65 stamping itin the stamping machine, that the stamped coal charge introduced in thechamber has a height that decreases toward the gas outlet opening.Furthermore, the lower portion of the cover adjacent to the chamber mayrecede` toward the gas outlet uniformly or stepwise, or both thesemeasures may be taken in common.

A chamberoven installation adapted to carry out the invention and inwhich the coal to be coked is introduced in th'e chamber in the usualmanner from the oven cover through a plurality Vof charging holes, isillustrated by way of example in the accompanying drawmg.

Figure 1, is a' cross-sectional `view of a coke oven, taken in thedirection of the oven battery. Figure 2, is a Vertical longitudinalsection, showing the gas collection passage increasing in area towardthe gas outlet, with the levelling bar in place, and i Figure 3, is afragmentary cross-sectional view showing the enlarged gas collectionpassage in dotted lines.

The horizontal coking chamber a is 'closed in the usual manner at its`front ends by doors Z), a clqseable levelling hole bl being provided inthe door Z) located on the pushing machine side of the battery. In thecover o of the 35 chamber a are provided the charging holes 01 for thecoal to be coked, and the outlet 02 for the distillation gases producedduring the carbonizing period. An. ascension pipe (not.

shown) conducting the gases to the hydraulic 90. i

main is connected as usual to the outlet 02, the latter being locatednear the levelling hole bl. In the embodimentillustrated the enlargementof the gas-collecting passage e is obtainedby the lower portions of thesections of the cover c, located between the individual charging holes01, `being set off stepwise from the chamber toward the gas outlet 02,as clearly to be seen from the drawing. The bar d serving to level thecharge 'may have a 10 cross section` which corresponds to thisenlargement, that is, which increases in height from its free end.l Thisafords the further `advantage of the levelling bar d having a notablyincreased resistance to bending stresses than hitherto.

In the described case the charge is levelled in the usual manner, sothat the surface of the charge extends in a straight horizontal plane.In the case, however, that theV increase in area of the gas collectingpassage,. obtained by the described -tapering of the cover is notsufi'icient, the surface of the charge may be levelled so as to declinetoward the gas outlet 0.2. This may be obtained in the simplest mannerby designing the levelling bar as a freely suspended body having anunderside tapering toward its free end. In this manner a body of atleast approximately uniform resistance to bending stresses is obtained.

It may be further of advantage, in particular with chambers of .verygreat length, to not arrange the gas outlet in the proximity of a frontend of chamber a, but about in the middle thereof. By this arrangementdifferences of pressure within the Chamber, which .diferences mightcausegases to pass over into the adjacent heat-ing walls, are excluded as-far'as possible. The increase in area of the gas collecting passage issuitably obtained in this case merely by raising the lower portion ofthe cover ad'jacent to the Chamber from both front ends toward thismiddle gas Outlet; Of course, levelling devices may also be provided onboth sides of the Chamber, which devices may be constructed in theabove-described manner.

What I claim, is:- f

1. A horizontal coking chamber provided with a cover and a gas ofi'takepassing through said cover and communicating with the chamber, theunderside of the cover being progressively higher from a point remotesaid oiftake to the point where said ofi'take communicates with thechamber. v

2. A horizontal coking chamber provided with a cover and a gas oiftakethrough said cover at one end thereof, the underside of the cover beingprogressively higher from a point intermediate the ends of the Chamberto thev said end.

3. A horizontal coking chamber provided with a .cover having a pluralityof charging openings spaced longitudinally of the cover -and agas'offtake at one end thereof, the underside of the cover on the sideof each of the charging holes towards the ofl'take being higher than thebottom of the cover on the opposite side of the charging hole.

In testimony Whereof, I have signed my name to this specification.

OARL OTTO.

